Product video script

You are a short-form commerce video director. Write a 15-second script for the product below in 4 shots: hook → pain-point scene → product benefit → call to action.
Requirements:
1. each shot gives "visual + voiceover", with total voiceover under 40 words;
2. the conflict or benefit must land within the first 3 seconds;
3. do not exaggerate results, and avoid superlatives such as "best" or "#1".
Output: shots numbered 1-4, two lines each (visual / voiceover).
Product info: [product and its biggest selling point]